139 lines
4.6 KiB
Python
139 lines
4.6 KiB
Python
# Copyright 2019 3YOURMIND GmbH
|
|
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import logging
|
|
import re
|
|
|
|
from .utils import update_migration_tests, build_error_dict
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
def has_not_null_column(sql_statements, **kwargs):
|
|
# TODO: improve to detect that the same column is concerned
|
|
return any(
|
|
re.search("(?<!DROP )NOT NULL", sql) and not sql.startswith("CREATE TABLE")
|
|
for sql in sql_statements
|
|
) and not any("SET DEFAULT" in sql for sql in sql_statements)
|
|
|
|
|
|
def has_add_unique(sql_statements, **kwargs):
|
|
regex_result = None
|
|
for sql in sql_statements:
|
|
regex_result = re.search("ALTER TABLE (.*) ADD CONSTRAINT .* UNIQUE", sql)
|
|
if regex_result:
|
|
break
|
|
if not regex_result:
|
|
return False
|
|
|
|
concerned_table = regex_result.group(1)
|
|
table_is_added_in_transaction = any(
|
|
sql.startswith("CREATE TABLE {}".format(concerned_table))
|
|
for sql in sql_statements
|
|
)
|
|
return not table_is_added_in_transaction
|
|
|
|
|
|
class BaseAnalyser(object):
|
|
base_migration_tests = [
|
|
{
|
|
"code": "RENAME_TABLE",
|
|
"fn": lambda sql, **kw: re.search("RENAME TABLE", sql)
|
|
or re.search("ALTER TABLE .* RENAME TO", sql),
|
|
"err_msg": "RENAMING tables",
|
|
"mode": "one_liner",
|
|
},
|
|
{
|
|
"code": "NOT_NULL",
|
|
"fn": has_not_null_column,
|
|
"err_msg": "NOT NULL constraint on columns",
|
|
"mode": "transaction",
|
|
},
|
|
{
|
|
"code": "DROP_COLUMN",
|
|
"fn": lambda sql, **kw: re.search("DROP COLUMN", sql),
|
|
"err_msg": "DROPPING columns",
|
|
"mode": "one_liner",
|
|
},
|
|
{
|
|
"code": "DROP_TABLE",
|
|
"fn": lambda sql, **kw: sql.startswith("DROP TABLE"),
|
|
"err_msg": "DROPPING table",
|
|
"mode": "one_liner",
|
|
},
|
|
{
|
|
"code": "RENAME_COLUMN",
|
|
"fn": lambda sql, **kw: re.search("ALTER TABLE .* CHANGE", sql)
|
|
or re.search("ALTER TABLE .* RENAME COLUMN", sql),
|
|
"err_msg": "RENAMING columns",
|
|
"mode": "one_liner",
|
|
},
|
|
{
|
|
"code": "ALTER_COLUMN",
|
|
"fn": lambda sql, **kw: re.search(
|
|
"ALTER TABLE .* ALTER COLUMN .* TYPE", sql
|
|
),
|
|
"err_msg": (
|
|
"ALTERING columns (Could be backward compatible. "
|
|
"You may ignore this migration.)"
|
|
),
|
|
"mode": "one_liner",
|
|
},
|
|
{
|
|
"code": "ADD_UNIQUE",
|
|
"fn": has_add_unique,
|
|
"err_msg": "ADDING unique constraint",
|
|
"mode": "transaction",
|
|
},
|
|
]
|
|
|
|
migration_tests = []
|
|
|
|
def __init__(self, exclude_migration_tests):
|
|
self.exclude_migration_tests = exclude_migration_tests or []
|
|
self.errors = []
|
|
self.ignored = []
|
|
self.migration_tests = update_migration_tests(
|
|
self.base_migration_tests, self.migration_tests
|
|
)
|
|
|
|
def analyse(self, sql_statements):
|
|
for statement in sql_statements:
|
|
for test in self.one_line_migration_tests:
|
|
self._test_sql(test, sql=statement)
|
|
|
|
for test in self.transaction_migration_tests:
|
|
self._test_sql(test, sql=sql_statements)
|
|
|
|
@property
|
|
def one_line_migration_tests(self):
|
|
return [test for test in self.migration_tests if test["mode"] == "one_liner"]
|
|
|
|
@property
|
|
def transaction_migration_tests(self):
|
|
return [test for test in self.migration_tests if test["mode"] == "transaction"]
|
|
|
|
def _test_sql(self, test, sql):
|
|
if test["fn"](sql, errors=self.errors):
|
|
if test["code"] in self.exclude_migration_tests:
|
|
logger.debug("Testing %s -- IGNORED", sql)
|
|
err = build_error_dict(migration_test=test, sql_statement=sql)
|
|
self.ignored.append(err)
|
|
else:
|
|
logger.debug("Testing %s -- ERROR", sql)
|
|
err = build_error_dict(migration_test=test, sql_statement=sql)
|
|
self.errors.append(err)
|
|
else:
|
|
logger.debug("Testing %s -- PASSED", sql)
|